Global Patent Index - EP 0336675 A1

EP 0336675 A1 19891011 - Dielectric image-resonator multiplexer.

Title (en)

Dielectric image-resonator multiplexer.

Title (de)

Multiplexer mit durch Reflektion simulierten dielektrischen Resonatoren.

Title (fr)

Multiplexeur à résonateurs diélectriques simulés par réflexion.

Publication

EP 0336675 A1 19891011 (EN)

Application

EP 89303265 A 19890403

Priority

CA 563315 A 19880405

Abstract (en)

A multiplexer (102) can be operated in the TE01 delta or HE11 delta modes, each channel of the multiplexer has one bandpass filter, with each filter usually having a plurality of cavities (41,51). One cavity of each filter is a common cavity (51) with all of the other filters of the multiplexer. The common cavity (51) contains one independent dielectric quarter-cut or half-cut image resonator (14,15) for each filter representing a channel of the multiplexer. Each resonator (11-18) is mounted on a suitable support. The common cavity (51) provide a common junction and contains a loop coupling (61) to couple electromagnetic energy between the various channels. The multiplexer has at least one input (31) and at least one output (31).

IPC 1-7

H01P 1/208; H01P 1/213; H01P 7/10

IPC 8 full level

H01P 1/208 (2006.01); H01P 1/213 (2006.01); H01P 7/10 (2006.01)

CPC (source: EP US)

H01P 1/2084 (2013.01 - EP US); H01P 1/2138 (2013.01 - EP US); H01P 7/10 (2013.01 - EP US)

Citation (search report)

  • [A] US 4423397 A 19831227 - NISHIKAWA TOSHIO [JP], et al
  • [AD] CA 1194160 A 19850924 - COM DEV LTD
  • [A] GB 1317643 A 19730523 - TAVKOEZLESI KUTATO INTEZET
  • [AD] 1987 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, Las Vegas, Nevada, 9th-11th June 1987, vol. 1, pages 133-136, IEEE, New York, US; T. NISHIKAWA et al.: "Dielectric high-power bandpass filter using quarter-cut TE01delta image resonator for cellular base stations"
  • [A] 1985 IEEE-MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, St. Louis, Missouri, 4th-6th June 1985, pages 343-345, IEEE, New York, US; W.C. TANG et al.: "Dielectric resonator output multiplexer for C-band satellite applications"

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

EP 0336675 A1 19891011; CA 1251835 A 19890328; US 4881051 A 19891114

DOCDB simple family (application)

EP 89303265 A 19890403; CA 563315 A 19880405; US 22778888 A 19880803